Abstract: A coating composition is provided. The composition comprises as component I, a) a polyaspartic acid ester comprising the reaction product of one more diamines, one or more difunctional acrylate-containing compounds and one or more maleic/fumaric acid esters; b) at least one moisture scavenger; c) at least one deaerator; d) at least one plasticizer; and e) optionally additives; and as component II, one or more polyisocyanates. Methods of making and applying the composition to a substrate are also provided. The coating is particularly suitable for use as a gel coat.

Abstract: An adhesive composition for detachable adhesive bonds is based on adhesive matrices and expansion material, the particles of the expansion material being at least partially encapsulated.

Abstract: The invention relates to a composite material having two or more superimposed wood layers. Said layers are joined together by means of a one component polyurethane adhesive containing a prepolymer having free NCO groups and a wood having a volume fraction of libriform fibres in the region of between 50-70% is used.

Abstract: The invention relates to a method of sealing at least part of the surface of an article, comprising the steps of (a) applying a layer of a radiation-curable melt based on a moisture-crosslinking polyurethane to at least part of the surface of the article, and (b) irradiating the melt layer. The invention further relates to article surfaces sealed in this way, and also to the use of the abovementioned melt for surface sealing.

Abstract: The disclosure relates to an adhesive composition for bonding lignocellulosic substrates. The adhesive composition contains a crosslinker and a non-urea diluent where the non-urea diluent is present in an amount from about 0.01 to about 75 weight % based on the total wet weight of the composition and where the crosslinker contains essentially no formaldehyde. Also disclosed is the adhesive further containing. an aqueous mixture of a protein source. The disclosure also relates to a process for making lignocellulosic composites utilizing the disclosed adhesive composition and to the lignocellulosic composites made using the disclosed process.

Abstract: The invention relates to the use of a composite material having two or more superimposed layers of wood as a support element in structural engineering, nautical, vehicle and aircraft constructions, energy production systems, mining or in the production of furniture. The wood layers are joined together by means of a one component polyurethane adhesive containing a prepolymer with free NCO groups and the wood has a structure having a volume fraction of libriform fibres of between 50%-70%.

Abstract: Disclosed herein are coated articles and methods of preparing the same.

Abstract: Composed element including at least two panel-shaped elements, which each have an edge zone in which coupling means are present in the form of a profiled part respectively extending in the longitudinal direction of the respective edge zone, as well as each including an end face extending transversely to the respective edge zone, wherein said profiled parts allow coupling the panel-shaped elements together in an interlocking manner, wherein at least one of the panel-shaped elements includes an arrangement which hides from view at least a portion of the profiled part formed at the pertaining edge zone at the location of the end face.

Abstract: A paper-based composite comprises an interface layer (1) and a surface layer (2) which is bond on at least one surface of the interface layer (1). The interface layer (1) is made by foaming and curing polyurethane with paper cords (3) which are made by winding paper blended with a resin or adhesive.

Abstract: The present invention relates to the use of a polyurethane adhesive in the manufacture of film/foil-coated furniture. The adhesive consists of two components, the first component comprising at least two different polyurethanes which comprise carboxyl groups, and the polyurethanes comprising units derived from polyester diols and units derived from polyether diols, the weight quantity ratio of the sum total of all units derived from polyester diols to the sum total of all units derived from polyether diols being in the range from 1:9 to 9:1, and the second component comprising at least one silane compound reactive toward carboxyl groups.

Abstract: A method for producing a building board. The method includes applying synthetic-resin layers to the top side and/or the bottom side of a support board made of a wood material or a mixture of wood material and plastic. The layered structure is compressed under the impact of pressure and temperature. At least one of the synthetic-resin layers expands during compressing.

Abstract: An aqueous composition with a sediment content ?5%, comprising a polyurethane dispersion wherein the polyurethane has an acid value in the range of from 25 to 65 mgKOH/g and comprises (i) 36 to 60 wt % of at least one aromatic polyisocyanate and where the polyurethane is prepared in the presence of (a) ?5 wt % of 1-methyl-2-pyrrolidinone by weight of the polyurethane, (b) 5 to 100 wt % of 1-ethyl-2-pyrrolidinone by weight of polyurethane and (c) water.

Abstract: There is provided a two component polyurethane coating system which contains anti-microbial complexes consisting of phenol complexes which provide anti-microbial characteristics to the coating system and improved abrasion resistance. There is also provided substrates coated with the antimicrobial coatings.

Abstract: This invention relates to a composition comprising a solvent-based fluoropolymer and its use as a coating additive, and a coating composition comprising the fluoropolymer. The coating composition comprising the solvent-based fluoropolymer provides desirable properties including uniform spreading, and cleanability and increased contact angle to a coated substrate. There is further provided a method of treating a substrate using the coating composition.

Abstract: In one aspect, the present invention is a thin-layer lignocellulose composite having increased resistance to moisture. The thin-layer lignocellulosic composite includes a mixture of no more than about 95% by weight of a lignocellulosic fiber and at least about 5% by weight of an organic isocyanate resin. The mixture further includes short fibers and a release agent that does not interfere with subsequent processing of the thin-layer lignocellulosic composite. The mixture is pressed between two dies at an elevated temperature and pressure and for a sufficient time to form a thin-layer composite of predetermined thickness, and to allow the isocyanate resin to interact with the lignocellulosic fiber and short fibers such that the resultant thin-layer composite has a predetermined resistance to moisture.

Abstract: A composite material, useful in producing wood-based materials, comprises (a) at least one cellulose- or lignocellulose-containing material and (b) at least one aminoalkylsilane, or at least one cocondensate of the at least one aminoalkylsilane and at least one further functional silane, or an aqueous solution which contains the at least one aminoalkylsilane or the at least one cocondensate of the at least one aminoalkylsilane and the at least one further functional silane.

Abstract: A chemical composition comprises one or more urethane oligomers of at least two polymerized units selected from the group consisting of fluorine-containing urethane oligomers and long-chain hydrocarbon-containing urethane oligomers, wherein said oligomers comprise the reaction product of (a) one or more polyfunctional isocyanate compounds, (b) one or more polyols, (c) one or more monoalcohols selected from the group consisting of fluorocarbon monoalcohols, optionally substituted long-chain hydrocarbon monoalcohols, and mixtures thereof, (d) one or more silanes, and (e) one or more stabilizers comprising one or more reactive groups.

Abstract: A primer-less coating composition for facestock comprises: a binder being a water-dispersible polymer; an ethylenically unsaturated compound which is aqueous-dispersible and miscible, with or bonded to said water-dispersible polymer, wherein said ethylenically unsaturated compound is able to form a covalent bond with an ink; and a crosslinker, wherein said crosslinker is suitable for binding the coating to the facestock. The coating composition may be applied to a substrate to form a printable film. A printed film in accordance with the invention may be used in a label, for example for use on a container such as a bottle.

Abstract: The invention relates to new aqueous polyurethane-modified alkyd resin dispersions, to their preparation and use as binders in paints and coatings.

Abstract: The present invention relates to an aqueous polyurethane urea dispersion comprising a polyurethane urea polymer comprising structural units of the formula (I) wherein Aromat represents a compound selected from the group consisting of phenylene, tolylene, xylylene, tetramethylxylylene and diphenylenemethane, and wherein the polyurethane urea is obtained from components comprising A) at least one aromatic diisocyanate, B) at least one polyether polyol having a number-average molecular weight of from 300 to 1500 Da, C) at least one compound having one to two isocyanate-reactive groups and at least one ionogenic group, D) at least one polyol having a number-average molecular weight of from 60 to 499 Da, and E) water, wherein the average overall functionality of compounds B) to D) is from 1.85 to 2.2 and wherein the sum of the amount of aromatic urea groups and the amount of urethane groups is 2700 to 5000 mmol per kg polyurethane urea polymer.

Abstract: One embodiment provides a wrapping, comprising a first layer of synthetic polymeric material; a second layer of synthetic polymeric material; and a layer of natural material sandwiched between at least a portion of the first and second layers; wherein the first and second layers are wider than the layer of natural material and extend beyond opposing ends of the layer of natural material to form tabs, the tabs comprising said first and second layers sandwiched together without the layer of natural material therebetween. Methods of making and using are disclosed.

Abstract: A composition which provides surface effects to substrates comprising a polymer containing at least one urea linkage prepared by (i) reacting (1) at least one organic diioscyanate, polyisocyanate, or mixture thereof, and (2) at least one fluorochemical compound of Formula I Rf—O(CF2CF2)r(CH2CH2)q(R1)sXH??Formula (I) wherein Rf is a linear or branched C1 to C7 perfluoroalkyl optionally interrupted by one to three oxygen atoms, r is 1 to 3, q is 1 to 3, s is 0 or 1, X is O, S, or NR2 wherein R2 is H, or C1 to C6 alkyl, and R1 is a divalent radical selected from —S(CH2)n—, p is 1 to 50, and R3, R4 and R5 are each independently H or C1 to C6 alkyl; (ii) and then reacting with (3) water, a linking agent, or a mixture thereof.

Abstract: An aliphatic hybrid polyurethane/polyurea protective coating intended for use on concrete, steel, wood and other surfaces is provided, which coating exhibits excellent properties of durability and flexibility. The protective coating uses chemical components from urethane/urea systems in a unique way to generate beneficial systems.

Abstract: A stopper, particularly for a wine bottle, comprising a barrier layer comprising a hot melt polymetric adhesive and optionally at least one sub-layer having lower oxygen permeability than the hot melt adhesive.

Abstract: The present invention provides a primer for a laminate for packaging having print suitability, such as excellent transfer properties of printing ink and dot reproducibility, high adhesive properties, excellent storage stability for a long period of time under highly humid conditions, and acid resistance which are obtained by improving adhesion between the base layer, a printing ink layer, a coating layer, and an adhesive layer; and a laminate containing the primer layer, and the primer containing: a main component (A) containing a copolymer containing, as a monomer, an unsaturated compound (a) having a hydroxyl group, and at least one unsaturated compound (b) selected from the group consisting of unsaturated carboxylate, styrene, unsaturated carboxylic acid, unsaturated hydrocarbon, vinyl ester, and a halogenated vinyl compound; a curing agent (B) containing a compound having an isocyanate group; and a compound (C) having 2 or more of a carboxylic acid group or 1 or more of an anhydrous carboxylic acid group.

Abstract: The present invention relates to a process for the production of wood-base materials which have at least one thin veneer layer adhesively bonded over the surface to a substrate or to further veneer layers, which process comprises the following steps: i.

Abstract: An aqueous composition with a sediment content ?5%, comprising a polyurethane dispersion wherein the polyurethane has an acid value in the range of from 25 to 65 mgKOH/g and comprises (i) 36 to 60 wt % of at least one aromatic polyisocyanate and where the polyurethane is prepared in the presence of (a) ?5 wt % of 1-methyl-2-pyrrolidinone by weight of the polyurethane, (b) 5 to 100 wt % of 1-ethyl-2-pyrrolidinone by weight of polyurethane and (c) water.

Abstract: A biodegradable biomass article for use in construction includes a cellulose biomass. The cellulose biomass includes an alkaline crystalline substance. An adhesive layer covers an outer surface of the biomass, and a sealing layer covers the adhesive layer. A method for manufacturing the biodegradable biomass article includes drying a cellulose biomass, and mixing the biomass with water into a slurry. The slurry is heated, and strained after the step of heating, resulting in a residual paste. The residual paste is compressed to form a biomass mat. The biomass mat is heated, and an adhesive layer is applied which covers the biomass mat. A sealing layer is applied over the adhesive layer.

Abstract: A hybrid polymer composition and a method for forming it is provided, comprising a first part A comprising a polyurethane catalyst and an aldehyde resin pre-polymer and a second part B comprising a polyisocyanate pre-polymer and an aldehyde resin cure accelerator. Methods are also provided for forming a composite with a two part hybrid polymer composition and a fibrous web material.

Abstract: An aqueous composition comprising a polyurethane dispersion with a sediment content ?5%, wherein the polyurethane has an acid value in the range of from 25 to 65 mgKOH/g and comprises (i) 36 to 60 wt % of at least one aromatic polyisocyanate and where the polyurethane is prepared in the presence of (a) ?5 wt % of 1-methyl-2-pyrrolidinone by weight of the polyurethane and (b) at least one reactive diluent.

Abstract: The invention relates to a method of preparing aqueous emulsions of resins and additives, to provide coating compositions and additives which maintain solvent-like application and performance properties yet have reduced volatile organic content. The compositions and additives contain an organic phase, an aqueous phase, and an emulsifier. The emulsifier is preferably a polyolefin aminoester, a substituted alkanolamine, or a mixture thereof, a polyalkylene glycol ether, or an orange oil emulsifier. The compositions of the invention are particularly useful as coatings and coating additives that are applied to substrates, such as wood and plastics.

Abstract: A method to produce thin-layer lignocellulosic composites, such as wood-based doorskins, that exhibit substantial resistance to moisture is disclosed. In an embodiment, the method includes the steps of forming a mixture including a refined lignocellulosic fiber, wax, and an organic isocyanate resin. The mixture is initially pressed to form a loose mat. Subsequently, the mat is pressed between two dies at an elevated temperature and pressure to further reduce the thickness of the mat and to promote the interaction of the resin with the lignocellulosic fibers. In an embodiment, a release agent is included as part of the fiber mixture, or sprayed onto the surface of the mat. The thin-layer lignocellulosic composites of the present invention exhibit strong surface strength, high adhesiveness, and a 50% reduction in linear expansion and thickness swelling upon exposure to a high moisture environment as compared to thin-layer composites that do not include the isocyanate resin.

Abstract: An aqueous composition with a sediment content ?5%, comprising a polyurethane dispersion wherein the polyurethane has an acid value in the range of from 25 to 65 mgKOH/g and comprises (i) 36 to 60 wt % of at least one aromatic polyisocyanate and where the polyurethane is prepared in the presence of (a) ?5 wt % of 1-methyl-2-pyrrolidinone by weight of the polyurethane, (b) 5 to 100 wt % of 1-ethyl-2-pyrrolidinone by weight of polyurethane and (c) water.

Abstract: In a process for continuously manufacturing a flexible laminate for food packagings at least one plastic film and at least one further plastic film, metal foil or paper as laminate layers are continuously coated with an adhesive and brought together to form a laminate. Subsequently, the laminate is continuously irradiated in line in a microwave irradiation station in order to cure the adhesive. With the process according to the invention the curing time is significantly reduced in comparison to the standard thermal energy used nowadays and provided by a curing room warmed at 40-45° C.

Abstract: A water dilutable UV-curable polyurethane containing alkylene oxide groups, the polyurethane being obtained from components comprising at least: (i) 1 to 25 wt. % of at least one polyisocyanate; (ii) 0 to 80 wt. % of at least one hydroxyl functional compound containing alkylene oxide groups; (iii) 10 to 90 wt. % of at least one hydroxyl functional compound containing at least one polymerisable unsaturated (meth)acryloyl functional group per molecule; and (iv) 0 to 50 wt. % of at least one isocyanate-reactive compound not comprised by (ii) or (iii); wherein the sum of (i) to (iv) is 100%.

Abstract: A method of enhancing visual aspect stability in wooden substrates comprised of the steps of preparing a sealing composition by mixing thermosetting resins and hardener, applying said sealing composition onto the surface of a wooden substrate; and curing said polymer. The method may additionally comprise further steps of: scuffing or sanding the cured sealing layer, applying one or more topcoat composition, and curing said topcoat composition. Interior that comprises sealed wooden substrates with enhanced visual aspect stability produced by methods of the invention are also provided.

Abstract: Aqueous polyurethane dispersions are made from urethane prepolymers comprising one or more polyhydroxy compounds from ketone functional molecules derived from an epoxidized natural oil. Addition of a hydrazine functional moiety to the prepolymer dispersion can further provide a crosslinking mechanism resulting in the formation of azomethine linkages in the resulting polyurethane during drying. When the ketone functional molecule is derived from levulinic acid and epoxidized vegetable oil, the resulting urethane dispersion can also be converted into a hybrid polyurethane-vinyl dispersion by adding and polymerizing one or more vinyl monomers in the polyurethane prepolymer or polyurethane dispersion.

Abstract: The optical article of the invention comprises on at least one of its main surfaces an outer hydrophobic and/or oleophobic coating and in direct contact with the outer hydrophobic and/or oleophobic coating a dual-layer temporary coating, characterized in that the dual-layer temporary coating comprises a first layer, in direct contact with the outer hydrophobic and/or oleophobic coating selected from halogenated olefin polymers and polyurethanes, and a second layer, deposited on the first layer, of a polymer or polymer mixture acting as a water barrier. Applies to ophthalmic lens edging.

Abstract: Methods for improving one or more surface properties of a sheet of paper or paperboard, which method comprises (a) coating at least one side of the sheet of paper or paperboard with a dispersion having a cationic zeta potential formed by combining (1) a mixture containing one or more anionic pigments with (2) one or more polyamine-epihalohydrin cationic wet strength resins at a coating weight of from about 0.1 g/m2 to about 20 g/m2; (b) drying the coated sheet of paper or paperboard; (c) applying a functional barrier top coating that resists one or more of the following: liquid water, water vapor, gas permeability, oil and grease, slip, and static or an anionic latex based pigment coating that imparts improved opacity, brightness, or printability. The invention also includes the dispersions as well as paper or paperboard coated with the dispersion.

Abstract: Water-emulsifiable polyisocyanate compositions admixed with at least one solvent of formula (1) (R1O)2C(R2)—X—R3 are formulated into aqueous emulsions which advantageously further comprise a compound, bearing a mobile hydrogen function, or a compound containing precursor functions capable of liberating hydroxyl functions, and are useful for producing coatings on a variety of substrates, e.g., made of cement, wood or leather in particular, and also for producing adhesives.

Abstract: Aqueous polyurethane-polyurethane urea dispersions comprising a reaction product of: (i) an NCO prepolymer prepared from; (A) one or more di- or higher-functional polyols having a mean molecular weight of 400 to 5000 daltons, (B) optionally one or more di- or higher-functional polyol components having a molecular weight of from 62 to 399 daltons, and (C) one or more di- or poly-isocyanate components; and (ii) a mixture (D) of primary and/or secondary monoamino compounds (D1) and primary and/or secondary diamino compounds (D2); wherein at least one of the amino compounds of the mixture (D) has a functional group selected from sulfonates and carboxylates; wherein mixture (D) has a mean amino functionality of 1.65 to 1.95; and wherein the equivalent ratio of NCO groups in the NCO prepolymer to the total amount of isocyanate-reactive groups of the mixture (D) is 1.04 to 1.9; to processes for their preparation and to use thereof in the production of adhesive composites.

Abstract: Aqueous polyurethane-polyurethane urea dispersions comprising a reaction product of: (i) an NCO prepolymer prepared from; (A) one or more di- or higher-functional polyols having a mean molecular weight of 400 to 5000 daltons, (B) optionally one or more di- or higher-functional polyol components having a molecular weight of from 62 to 399 daltons, (C) one or more compounds which are monofunctional within the scope of the isocyanate polyaddition reaction and have an ethylene oxide content of at least 50 wt. % and a molecular weight of at least 400 daltons, and (D) one or more di- or poly-isocyanate components; and (ii) a mixture (E) of primary and/or secondary monoamino compounds (E1) and primary and/or secondary diamino compounds (E2); wherein at least one of the amino compounds of the mixture (E) has a functional group selected from sulfonates and carboxylates; wherein mixture (E) has a mean amino functionality of 1.65 to 1.

Abstract: There is provided a sheet paper material, at least one face of which is provided with a coating; the coating is a substantially even layer of a composition containing a mixture of polyurethane-base polymer material and kaolin; the coating has the look and feel of plastic, and permits high-quality printing; and the paper material is particularly suitable for packing prestige products.

Abstract: Composite elements having the following layer structure: (i) from 2 to 20 mm of metal, plastic or wood, (ii) from 10 to 300 mm of polyisocyanate polyadducts, (iii) from 2 to 20 mm of metal, plastic or wood, the layer (ii) containing prefabricated polyisocyanate polyadducts (x) which are adhesively bonded by polyisocyanate polyadducts (xx) to the layers (i) and (iii), and the polyisocyanate polyadducts (x) being pieces having a volume of from 4 to 1 000 cm3.

Abstract: An article comprising at least one cured, liquid-impervious polymeric shell substantially free from defects, at least one liner, and a non-tacky, thermoplastic adhesive layer between the shell and the liner, wherein the adhesive layer is melted and solidified to create a non-tacky bond between the shell and the liner, which can be moisture-absorbing or cut-resistant, whereby the liner supports and limits stretch ability of the shell, thereby preventing adhesive delamination between the adhesive layer and either of the shell and/or the liner; a method for the manufacture of an article comprising a supported, polymeric shell, such as a glove, a gauntlet, an apron, or a boot, comprising providing a cured, liquid-impervious, polymeric shell, providing a knitted/woven liner, incorporating a non-tacky, thermoplastic adhesive layer between the shell and the liner, such as by hot-melt spraying, dry-powder spraying or fiber-coating, creating intimate contact between the shell, the adhesive layer, and the liner, subjec

Abstract: Non aqueous water dispersible compositions comprising: I) polyisocyanates, which are made hydrophilic by reaction with a 1,3- or 1,2-nonionic diol containing one alkoxy-terminated polyoxyethylene and/or polyoxypropylene chain, II) one or more ethoxylated alcohol phosphates having at least one phosphoric group in acid form, and optionally III) a water miscible organic solvent, the compositions being useful as crosslinker for polyurethane aqueous dispersions.

Abstract: Substrates prone to heat distortion may be coated with a coating composition containing chlorinated polyolefin-modified acrylic latex emulsion, polyurethane dispersion, non-gelling self-crosslinking acrylic emulsion, and glycol-based solvent. The coating composition contains sufficient non-gelling self-crosslinking acrylic emulsion and glycol-based solvent so that a 0.1 mm wet thickness layer of the coating composition will form a tack-free film when heated at 65° C. for fifteen minutes, and the glycol-based solvent is selected so that the coating composition is shelf stable.

Abstract: This invention relates to a process for preparing sized paper and paperboard which incorporates in the paper and paperboard at the size press size a composition comprising one or more “hydrophobic polymers” wherein hydrophobic polymers, the amount of such polymers and the weight ratio of starch to such polymer in the composition are selected such that the paper and paper board exhibits a Cobb Value equal to or less than about 25 and to a sized paper or paperboard web formed by the process.

Abstract: In one aspect, the present invention is a thin-layer lignocellulose composite having increased resistance to moisture. The thin-layer lignocellulosic composite includes a mixture of no more than about 95% by weight of a lignocellulosic fiber and at least about 5% by weight of an organic isocyanate resin. The mixture further includes short fibers and a release agent that does not interfere with subsequent processing of the thin-layer lignocellulosic composite. The mixture is pressed between two dies at an elevated temperature and pressure and for a sufficient time to form a thin-layer composite of predetermined thickness, and to allow the isocyanate resin to interact with the lignocellulosic fiber and short fibers such that the resultant thin-layer composite has a predetermined resistance to moisture.

Abstract: The present invention provides polyurethanes including a reaction product of components including: (a) about 1 equivalent of at least one polyisocyanate; (b) about 0.05 to about 0.9 equivalents of at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups; and (c) about 0.1 to about 0.95 equivalents of at least one diol having 2 to 18 carbon atoms, wherein the reaction product components are essentially free of polyester polyol and polyether polyol and the reaction components are maintained at a temperature of at least about 100° C. for at least about 10 minutes, compositions, coatings and articles made therefrom and methods of making the same.